hydrogenosome


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hydrogenosome

[‚hī·drə′jen·ə‚sōm]
(microbiology)
A membrane-bound organelle found in some anaerobic fungi and protozoa that is involved in the production of hydrogen and carbon dioxide.
References in periodicals archive ?
9) Recent discovery (10) of hydrogenosome like organelles in three species of animal phylum, Loricifera, living in sediments of the deep anoxic hypersaline L'Atalante basin, makes us expect for the presence of hydrogenase in animals.
Produced pyruvate is transported to the hydrogenosome and metabolized to formate and acetate (Akhmanova et al.
One of the great recent discoveries in the cell biology of protists is that the hydrogenosome of Trichomonas vaginalis, cause of vaginitis, is a modified mitochondrion, in which the enzymes of oxidative phosphorylation have been replaced by fermentation enzymes that produce hydrogen gas (Muller, 1993, 1998; Bui et al.
Their thinking stems in large part from recently gathered information about the ancestry of the hydrogenosome.
In the case of the trichomonads the proteins have been localized to the hydrogenosome (10), an energy-generating organelle that already had been suspected by some of having mitochondrial origins.
On the ultrastructure of Trichomonas vaginalis: cytoskeleton, endocytosis and hydrogenosomes.
Instead, images of loriciferan tissue reveal what look like hydrogenosomes, organelles that help power some known anaerobic single-celled creatures.
The facts that mitochondria and hydrogenosomes are aerobic and anaerobic homologues of the same endosymbiotically derived organelle (54) and moreover mitochondria is an organelle in living anaerobic life forms could also support the reconstruction based on the evoecotoxicology approach that mitochondria probably evolved from anaerobic to aerobic metabolism in eukaryotic organisms.
Mitochondria and hydrogenosomes are believed to be aerobic and anaerobic homologues of the same endosymbiotically derived organelle (Hrdy et al.
Parabasalia are clearly secondarily amitochondrial, since their hydrogenosomes probably evolved from mitochondria by the loss of cytochromes and DNA; protein phylogeny ((4); Hasegawa, pers.